Interlocking change-over valve system

Abstract

An interlocking change-over valve system for use in a hydraulically controlled mechanism includes a plurality of hydraulic actuators and at least one valve corresponding to each actuator for controlling the hydraulic pressure supplied to each actuator. A hydraulic cylinder communicates with each valve for opening and closing the valve. A control device remotely activates the hydraulic cylinder to selectively supply hydraulic pressure to some of the hydraulic actuators.

What is claimed is: 
     
       1. An interlocking change-over valve system for use with a hydraulically controlled mechanism, the system comprising: at least first and second hydraulic actuators;   at least one valve corresponding to each of the at least first and second actuators for controlling a hydraulic pressure supplied to said actuator, wherein the corresponding valves of the first and second actuators have spherical valve members deviated 90 degrees from each other;   a hydraulic cylinder connected by a link mechanism to each of the at least one valve for opening and closing said valves to simultaneously alter the supply of hydraulic pressure to the at least first and second actuators; and   a control device for remotely activating the hydraulic cylinder to selectively supply hydraulic pressure to some of the plurality of hydraulic actuators.   
     
     
       2. An interlocking change-over valve system for use with a hydraulically controlled mechanism, the system comprising: at least first and second hydraulic actuators;   at least one valve corresponding to each of the at least first and second actuators for controlling a hydraulic pressure supplied to said actuator, wherein the corresponding valves of the first and second actuators have spherical valve members deviated 90 degrees from each other;   a hydraulic cylinder connected by a link mechanism to each of the at least one valve for opening and closing said valve; and   a control device for remotely activating the hydraulic cylinder to selectively supply hydraulic pressure to some of the plurality of hydraulic actuators;   wherein the valves corresponding to the first actuator are open and the valves corresponding to the second actuator are closed to supply hydraulic pressure only to the first actuator when the hydraulic cylinder is in a first position, and wherein the valves corresponding to the first actuator are closed and the valves corresponding to the second actuator are open to supply hydraulic pressure only to the second actuator when the hydraulic cylinder is in a second position.   
     
     
       3. The interlocking change-over valve system according to claim 2, wherein the hydraulic actuators consist of one of the group of hydraulic cylinder actuators and hydraulic motor actuators. 
     
     
       4. The interlocking change-over valve system according to claim 2, wherein a pair of valves correspond to each of the first and second actuators. 
     
     
       5. The interlocking change-over valve system according to claim 2, further comprising an electromagnetic valve connected to the hydraulic cylinder and the control device, wherein the electromagnetic valve controls the supply of hydraulic pressure to the hydraulic cylinder to position the hydraulic cylinder in the first position or the second position based upon a received signal from the control device. 
     
     
       6. The interlocking change-over valve system according to claim 5, wherein the control device is a manually operated push-button lever. 
     
     
       7. An interlocking change-over valve system comprising: a hydraulically controlled mechanism;   a pair of hydraulic cylinder actuators and a pair of hydraulic motor actuators, said cylinder actuators and motor actuators for controlling the movement of the mechanism;   a pair of valves corresponding to each of the pair of cylinder actuators and the pair of motor actuators for controlling a hydraulic pressure supplied to the actuator;   a first hydraulic cylinder connected by a link mechanism to the valves corresponding to the cylinder actuators for opening and closing the valves to simultaneously alter the supply of hydraulic pressure to both cylinder actuators;   a second hydraulic cylinder connected by a link mechanism to the valves corresponding to the motor actuators for opening and closing the valves to simultaneously alter the supply of hydraulic pressure to both motor actuators;   a first control device for remotely activating the first hydraulic cylinder to selectively supply hydraulic pressure to one of the pair of cylinder actuators; and   a second control device for remotely activating the second hydraulic cylinder to selectively supply hydraulic pressure to one of the pair of motor actuators.